nothinglasts1987
Cadet
- Joined
- Dec 9, 2016
- Messages
- 6
I am playing around with a Dell optiplex 7060 micro tower that utilizes an onboard intel I219-LM. Other specs include an i7-8700 and 32gb of RAM. After setting up a jail or vm, when said jail/vm is started, stopped, or rebooted I briefly lose network connectivity to the host system. I started with 11.2-U4 and went down to 11.2-U2.1 with the same results.
Here is the output of /var/log/messages when the vm was started;
Logs when vm is stopped;
What's more interesting is I found that this is only an issue when you're working with a single running jail/vm. If I start up a second jail or vm and let that run, I can start and stop the first jail or vm without experiencing the host network drop.
ifconfig output with vm running;
ifconfig output with vm stopped;
Here is the output of /var/log/messages when the vm was started;
Code:
May 13 15:32:54 optisan01 tap0: Ethernet address: 00:bd:1a:97:81:00 May 13 15:32:54 optisan01 kernel: em0: link state changed to DOWN May 13 15:32:54 optisan01 kernel: em0: link state changed to DOWN May 13 15:32:54 optisan01 kernel: bridge0: link state changed to DOWN May 13 15:32:54 optisan01 kernel: bridge0: link state changed to DOWN May 13 15:32:54 optisan01 kernel: tap0: promiscuous mode enabled May 13 15:32:54 optisan01 kernel: tap0: link state changed to UP May 13 15:32:54 optisan01 kernel: tap0: link state changed to UP May 13 15:32:54 optisan01 kernel: bridge0: link state changed to UP May 13 15:32:54 optisan01 kernel: bridge0: link state changed to UP May 13 15:32:57 optisan01 kernel: em0: link state changed to UP
Logs when vm is stopped;
Code:
May 13 15:47:26 optisan01 kernel: tap0: link state changed to DOWN May 13 15:47:26 optisan01 kernel: tap0: link state changed to DOWN May 13 15:47:27 optisan01 kernel: em0: link state changed to DOWN May 13 15:47:27 optisan01 kernel: em0: link state changed to DOWN May 13 15:47:27 optisan01 bridge0: can't disable some capabilities on em0: 0x1 May 13 15:47:30 optisan01 kernel: em0: link state changed to UP May 13 15:47:30 optisan01 kernel: em0: link state changed to UP
What's more interesting is I found that this is only an issue when you're working with a single running jail/vm. If I start up a second jail or vm and let that run, I can start and stop the first jail or vm without experiencing the host network drop.
ifconfig output with vm running;
Code:
em0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=2098<VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC> ether 6c:2b:59:ed:63:44 hwaddr 6c:2b:59:ed:63:44 inet 10.99.99.109 netmask 0xffffff00 broadcast 10.99.99.255 nd6 options=9<PERFORMNUD,IFDISABLED> media: Ethernet autoselect (1000baseT <full-duplex>) status: active lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384 options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6> inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2 inet 127.0.0.1 netmask 0xff000000 nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> groups: lo bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 ether 02:9b:81:b4:fc:00 nd6 options=1<PERFORMNUD> groups: bridge id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15 maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200 root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0 member: tap0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 3 priority 128 path cost 2000000 member: em0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 1 priority 128 path cost 20000 tap0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500 description: Attached to optisan01dh options=80000<LINKSTATE> ether 00:bd:1a:97:81:00 hwaddr 00:bd:1a:97:81:00 nd6 options=1<PERFORMNUD> media: Ethernet autoselect status: active groups: tap Opened by PID 20461
ifconfig output with vm stopped;
Code:
em0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC> ether 6c:2b:59:ed:63:44 hwaddr 6c:2b:59:ed:63:44 inet 10.99.99.109 netmask 0xffffff00 broadcast 10.99.99.255 nd6 options=9<PERFORMNUD,IFDISABLED> media: Ethernet autoselect (1000baseT <full-duplex>) status: active lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384 options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6> inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2 inet 127.0.0.1 netmask 0xff000000 nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> groups: lo bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 ether 02:9b:81:b4:fc:00 nd6 options=1<PERFORMNUD> groups: bridge id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15 maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200 root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0 member: em0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 1 priority 128 path cost 20000